Re: [Qemu-devel] Provide safe_syscall for s390x

[Michael Tokarev]

17.10.2016 13:53, Thomas Huth wrote:
> On 17.10.2016 12:49, Michael Tokarev wrote:
>> 17.10.2016 13:39, Michael Tokarev wrote:
>>
>>> (cc is gcc 6.2.0)
>>>
>>> I've no idea which -march is the default and what choices are available.
>>
>> $ gcc -march=?
>> gcc: error: unrecognized argument in option '-march=?'
>> gcc: note: valid arguments to '-march=' are: g5 g6 native z10 z13 z196
>> z9-109 z9-ec z900 z990 zEC12
>>
>> I guess g5 is the default?
> 
> I hope it is not the default - at least not for -m64.

Nope, z900 is the default.  For it and z990, asm generates that error.

> Could you please run the following and post the results:
> 
> gcc  -Q --help=target


The following options are target specific:
  -m31                                  [disabled]
  -m64                                  [enabled]
  -march=                               z900
  -mbackchain                           [disabled]
  -mbionic                              [disabled]
  -mbranch-cost=                        0x1
  -mdebug                               [disabled]
  -mesa                                 [disabled]
  -mfused-madd                          
  -mglibc                               [enabled]
  -mhard-dfp                            [enabled]
  -mhard-float                          [enabled]
  -mhotpatch=                           
  -mhtm                                 [enabled]
  -mlong-double-128                     [disabled]
  -mlong-double-64                      [enabled]
  -mlra                                 [enabled]
  -mmusl                                [disabled]
  -mmvcle                               [disabled]
  -mno-stack-guard                      
  -mno-stack-size                       
  -mpacked-stack                        [disabled]
  -msmall-exec                          [disabled]
  -msoft-float                          [disabled]
  -mstack-guard=                        0
  -mstack-size=                         0
  -mtune=                               [default]
  -muclibc                              [disabled]
  -mvx                                  [enabled]
  -mwarn-dynamicstack                   [disabled]
  -mwarn-framesize=                     0
  -mzarch                               [enabled]
  -mzvector                             [disabled]

Thanks,

/mjt